Patent
Amplifier with power supply switching
TLDR
In this article, a power amplifier is provided with a peak holding means for holding, for a given period of time, a peak value of an input signal or an output signal of a power amplifying element there of and is provided also with a switching means for switching, to a selected value in accordance with an output from the peak-holding means.Abstract:
A power amplifier is provided with a peak-holding means for holding, for a given period of time, a peak value of an input signal or an output signal of a power amplifying element there of and is provided also with a switching means for switching, to a selected value in accordance with an output from the peak-holding means, a dc power supply voltage which is supplied to said power amplifying elements. Such amplifier is able to enhance the power efficiency of the power amplifier as well as to reduce switching noises and to reduce the development of distortions.read more
Citations
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Patent
Power amplifier circuit
TL;DR: In this article, a switching device operates for selectively connecting either a low-voltage power supply or a high-volumetric power supply to a power amplifier, and a signal voltage is generated in response to a voltage outputted from the power amplifier.
Patent
Method and apparatus for preventing power amplifier saturation
TL;DR: In this article, a power amplifier with a reduced voltage supply is presented, which reduces amplifier power dissipation and can be efficiently used by a communication device during signal transmission, while increasing power amplifier efficiency and insuring that the power amplifier is not saturated.
Patent
Supply voltage controlled stereophonic amplifier system
TL;DR: In this paper, the output of the analog logic circuit is compressed by a signal compression means which functions to compensate for the non linear response of the DC-DC converter, which is a power supply controlled stereophonic amplifier system of a simplified circuit configuration.
Patent
Audio amplifier switch-on control circuit
Palara Sergio,Aldo Torazzina +1 more
TL;DR: In this paper, a capacitor which is progressively chargeable in response to a switching on of the equipment, however brought about, is associated with an oscillating circuit with intervention threshold, which shifts from a first to a second operating state, generating a switch-on current for the audio amplifier.
Patent
Power amplifier apparatus
Kenichi Kokubo,Takayuki Taira +1 more
TL;DR: In this paper, a power amplifier apparatus comprising four amplifiers is adapted to amplify the half-wave output signal of a first differential amplifier by means of second and third output amplifiers to drive load by their output amplifying signals.
References
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Patent
Power amplifier devices
TL;DR: In this paper, a power amplifier with an output transistor and voltage is applied to the output transistor from a source through a switching type stabilized source device, where the source device produces a reference voltage equal to the sum of the output voltage of the amplifier and a constant voltage required to be impressed across the collector and emitter electrodes of output transistor.